CN205175664U - Photoelectric detection system of LED charactron - Google Patents
Photoelectric detection system of LED charactron Download PDFInfo
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- CN205175664U CN205175664U CN201520965433.0U CN201520965433U CN205175664U CN 205175664 U CN205175664 U CN 205175664U CN 201520965433 U CN201520965433 U CN 201520965433U CN 205175664 U CN205175664 U CN 205175664U
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Abstract
The utility model provides a photoelectric detection system of LED charactron, including camera bellows, sliding guide, guide rail drive module, insulating carrier, image acquisition module, LED drive module, host system, image processing module and electrical performance test module, the image acquisition module guide rail drive module LED drive module host system image processing module with the electrical performance test module all sets up in the camera bellows. The utility model discloses a photoelectric detection system of LED charactron to the photoelectric properties of LED charactron detect fast, the degree of accuracy is high, accelerated the last unloading speed of LED charactron, be convenient for operate, the electric connection performance of LED charactron is more stable, and it is more accurate to detect.
Description
Technical field
The utility model relates to a kind of photodetector system, particularly relates to a kind of photodetector system of LED charactron.
Background technology
Manufacture field at LED, need the production testing LED charactron manufactured being carried out to mass, detect the electric property, functional parameter, outward appearance etc. of LED charactron.But, for LED charactron, except detection aforementioned properties, also need to detect the optical property parameter of LED charactron.
Under current technical situation, front end operation in electronic devices and components manufacture process, as the welding etc. of fixing, the wafer of wafer, all come by automatic machinery, and the detection operation of electronic devices and components, automaticity is lower, especially for the electronic devices and components of certain fields or the electronic devices and components of non-standard encapsulation.
The main cause that the electronic devices and components of non-standard encapsulation are difficult to realize Aulomatizeted Detect is, profile and the pin size of these electronic devices and components are irregular, between different types of device, bin differences is large, and automatic machinery needs first to refine the feature of measurand and learn, could realize the detection action of standardization and repeatability, but the uncertainty of measurand feature makes the difficulty of refinement and study greatly increase.
Particularly, manual detection or specialized equipment is mostly adopted to detect to the LED charactron of non-standard encapsulation in prior art.Wherein, detection comprises electrical property detection and optical property detection.Electrical property detects in the industry cycle very ripe, mainly through the voltage-current characteristic of apparatus measures LED component.
By artificial naked eyes, the manual detection of optical property, after namely lighting LED charactron, judges whether every optical parametric meets the requirements.Rely on test item that is artificial and naked-eye observation, there is the inconsistency of subjectivity and testing result, meanwhile, these test items are very high to the skill set requirements of testing staff, and testing staff needs could be on duty through longer study and training.Therefore, not only detection efficiency is low, poor accuracy for the manual detection method of LED charactron photoelectric properties of the prior art, the manpower expended is large, and high to the skill set requirements of testing staff, and detection time, length easily caused the fatigue damage of testing staff and the reduction of detection accuracy.
The specialized equipment of optical property detects, and namely adopts special luminance test instrument to detect.This needs to light each tube core one by one, and is tested and record the optical characteristics of each LED charactron one by one by manual operation.Test a device by such method and need long time, be generally for sample test research, and cannot be used for mass manufacturing process completely, luminance test instrument cost is higher, cannot test chromaticity index, impurity index etc., and utilization factor is low.
Utility model content
The shortcoming of prior art in view of the above, the purpose of this utility model is the detection providing a kind of photodetector system of LED charactron and can carry out robotization to the photoelectric properties of LED charactron, meets the detection demand to batch LED charactron photoelectric properties.
For achieving the above object and other relevant objects, the utility model provides a kind of photodetector system of LED charactron, comprises camera bellows, rail plate, guide rail driver module, insulation carrier, image collection module, LED drive module, main control module, image processing module and electric performance test module; Described image collection module, described guide rail driver module, described LED drive module, described main control module, described image processing module and described electric performance test module are all arranged in described camera bellows; Described camera bellows is used for providing working environment for the Photoelectric Detection of LED charactron; Described insulation carrier is used for carrying several LED charactrons to be measured abreast; Described rail plate is arranged on below described insulation carrier, passes in and out described camera bellows for driving several LED charactrons to be measured on described insulation carrier; Described guide rail driver module passes in and out camera bellows for driving rail plate; And under the control of described main control module, according to the position deviation of current LED charactron to be measured and testing interdigit, current LED charactron to be measured is moved to testing position; Described LED drive module is connected with described main control module, under the control of described main control module, drives and lights the LED charactron current to be measured be positioned on testing position; Described image collection module is connected with described main control module, for obtaining the image information of current tested LED charactron; Described image processing module is connected with described main control module with described image collection module, for before current tested LED charactron powers on, the image information of the current tested LED charactron that image collection module obtains is processed, obtains the positional information of current tested LED charactron; After current tested LED charactron powers on, the image information of the LED charactron that image collection module obtains is processed, obtain the optical performance information of tested LED charactron; Described electric performance test module is connected with described main control module with described LED drive module, for obtaining the electric property information of tested LED charactron; The positional information of current tested LED charactron before described main control module is used for powering on according to current tested LED charactron, obtains the position deviation of this positional information and testing interdigit, and is sent to described guide rail driver module; And according to the test result of described image processing module and described electric performance test module, judge whether tested LED charactron is non-defective unit.
According to the photodetector system of above-mentioned LED charactron, wherein: described guide rail driver module comprises driving belt and drive motor.
According to the photodetector system of above-mentioned LED charactron, wherein: described LED drive module comprises probe and probe actuation module, described probe is used under the driving of described probe actuation module, realizes and the contact of the pin of the LED charactron current to be measured on testing position and disconnection.
According to the photodetector system of above-mentioned LED charactron, wherein: described image collection module is positioned at the top of testing position, camera and light source is comprised.
Further, according to the photodetector system of above-mentioned LED charactron, wherein: described camera adopts CCD camera or CMOS camera.
According to the photodetector system of above-mentioned LED charactron, wherein: described electric performance test module and described main control module are co-located on one piece of pcb board.
According to the photodetector system of above-mentioned LED charactron, wherein: also comprise display module, described display module is connected with described main control module, for showing whether several tested LED charactrons current are non-defective unit.
Further, according to the photodetector system of above-mentioned LED charactron, wherein: described display module adopts liquid crystal display, LED charactron or pilot lamp.
As mentioned above, the photodetector system of LED charactron of the present utility model, has following beneficial effect:
(1) speed detected the photoelectric properties of LED charactron is fast, accuracy is high;
(2) the loading and unloading speed of LED charactron is accelerated, convenient operation;
(3) electrical connection properties of LED charactron is more stable, and it is more accurate to detect.
Accompanying drawing explanation
Fig. 1 is shown as the external structure schematic diagram of the photodetector system of LED charactron of the present utility model;
Fig. 2 is shown as the inner structure schematic diagram of the photodetector system of LED charactron of the present utility model.
Element numbers explanation
1 camera bellows
2 rail plates
3 guide rail driver modules
4 insulation carriers
5 image collection module
51 cameras
52 light sources
6LED driver module
7LED charactron
Embodiment
Below by way of specific instantiation, embodiment of the present utility model is described, those skilled in the art the content disclosed by this instructions can understand other advantages of the present utility model and effect easily.The utility model can also be implemented or be applied by embodiments different in addition, and the every details in this instructions also can based on different viewpoints and application, carries out various modification or change not deviating under spirit of the present utility model.
It should be noted that, the diagram provided in the present embodiment only illustrates basic conception of the present utility model in a schematic way, then only the assembly relevant with the utility model is shown in graphic but not component count, shape and size when implementing according to reality is drawn, it is actual when implementing, and the kenel of each assembly, quantity and ratio can be a kind of change arbitrarily, and its assembly layout kenel also may be more complicated.
See figures.1.and.2, the photodetector system of LED charactron of the present utility model comprises camera bellows 1, rail plate 2, guide rail driver module 3, insulation carrier 4, image collection module 5, LED drive module 6, main control module (not shown), image processing module (not shown) and electric performance test module (not shown).Image collection module 5, guide rail driver module 3, LED drive module 6, main control module, image processing module and electric performance test module are all arranged in camera bellows 1.
Camera bellows 1 is for providing working environment for the Photoelectric Detection of LED charactron 7.
Insulation carrier 4 is for carrying several LED charactrons 7 to be measured abreast.Preferably, several LED charactrons 7 to be measured are placed side by side on insulation carrier 4.Wherein, namely several LED charactrons 7 to be measured can connect slivering by adhesive tape in the preceding working procedure manufactured, and are placed on insulation carrier, after treating Photoelectric Detection, then are cut into independently LED charactron.It should be noted that, on insulation carrier 4, the LED charactron to be measured of carrying can be single, also can be multiple.Insulation carrier 4 has the installation dimension that the spacing between LED charactron two array of pins matches.
Rail plate 2 is arranged on below insulation carrier 4, passes in and out camera bellows 1 for driving several LED charactrons 7 to be measured on insulation carrier 4.
Guide rail driver module 3 passes in and out camera bellows 1 for driving rail plate 2; And under the control of main control module, according to the position deviation of current LED charactron to be measured and testing interdigit, current LED charactron to be measured is moved to testing position.Preferably, guide rail driver module 3 comprises driving belt and drive motor.Due to the setting of guide rail driver module 3, the auto-alignment function to current LED charactron to be measured can be realized, therefore strict requirement is not just had to the aligned gaps of LED charactron to be measured on insulation carrier, thus be convenient to the accurate execution of the Photoelectric Detection of LED charactron.
LED drive module 6 is connected with main control module, under the control of main control module, drives and lights the LED charactron 7 current to be measured be positioned on testing position.Particularly, LED drive module 6 comprises probe and probe actuation module.Probe is used under the driving of probe actuation module, contacts, light current LED charactron to be measured to drive with the pin of the LED charactron current to be measured on testing position; After detection terminates, under the driving of probe actuation module, disconnect and being connected with the pin of the LED charactron current to be measured on testing position, to carry out detection next time.
Image collection module 5 is connected with main control module, for obtaining the image information of current tested LED charactron.Particularly, before current LED charactron to be measured powers on, need to obtain its image information, to obtain its current location information; After current LED charactron to be measured powers on, need to obtain its image information, to obtain its optical performance information.Wherein, image collection module is positioned at the top of testing position, comprises camera 51 and light source 52.Preferably, camera 51 adopts CCD camera or CMOS camera.Light source 52 is high uniformity light source.
Image processing module is connected with main control module with image collection module 5, for before current tested LED charactron 7 powers on, the image information of the current tested LED charactron that image collection module obtains is processed, obtains the positional information of current tested LED charactron; After current tested LED charactron 7 powers on, the image information of the LED charactron 7 that image collection module obtains is processed, obtain the optical performance information of tested LED charactron 7.Wherein, optical performance information comprises the brightness uniformity of LED charactron luminescence, uniformity of chromaticity, brightness stepping, colourity stepping, whether light leak, whether has impurity and be whether shell has the information such as cut.
Wherein, image processing module carrys out the image information of the LED charactron current to be measured obtained according to image collection module by certain location algorithm, obtain the positional information of current LED charactron to be measured.Because corresponding location algorithm has been proven technique in this area, therefore do not repeat them here.
Electric performance test module is connected with main control module with LED drive module 6, for obtaining the electric property information of tested LED charactron 7.Particularly, electric property information comprises forward voltage values, reverse leakage value, open circuit information, the short circuit information of LED charactron.Usually, electric performance test module and main control module are co-located on one piece of pcb board.
The positional information of current tested LED charactron before main control module is used for powering on according to current tested LED charactron, obtains the position deviation of this positional information and testing interdigit, and is sent to guide rail driver module; And according to the test result of image processing module and electric performance test module, judge whether tested LED charactron is non-defective unit.
Preferably, display module (not shown) is also comprised in the photodetector system of LED charactron of the present utility model, be connected with main control module, for showing whether several tested LED charactrons current are non-defective unit, so that testing staff sorts exactly.Particularly, display module preferentially adopts liquid crystal display to carry out the display of defect information, also can adopt LED charactron, also can adopt pilot lamp.When tested LED charactron is non-defective unit, defect instruction is shown in green; When tested LED charactron is defective, defect instruction is shown in red.
Particularly, the testing process of the photodetector system of LED charactron of the present utility model comprises the following steps:
Step S1, place several LED charactrons to be measured abreast being on the insulation carrier outside camera bellows.
Step S2, startup guide rail driver module, drive rail plate to enter camera bellows, enters camera bellows one by one to drive several LED charactrons to be measured on insulation carrier.
Step S3, image collection module obtain the image information of current LED charactron to be measured on insulation carrier, and transmit image processing module to obtain the positional information of current LED charactron to be measured, main control module is according to the image information of current LED charactron to be measured, obtain the position deviation of this positional information and testing interdigit, and be sent to guide rail driver module; Current LED charactron to be measured is moved to testing position by guide rail driver module.
Step S4, LED drive module, under the control of main control module, drive and light the LED charactron current to be measured be positioned on testing position.
Step S5, image collection module obtain the image information of current tested LED charactron after lighting, and the image information of image processing module to the LED charactron after obtained lighting processes, and obtains the optical performance information of LED charactron; Electric performance test module obtains the electric property information of tested LED charactron.
According to the optical performance information of tested LED charactron and electric property information, step S6, main control module judge whether tested LED charactron is non-defective unit.
When next LED charactron measured by needs, guide rail driver module drives rail plate to move to camera bellows, thus carries out the Photoelectric Detection of next LED charactron.After all LED charactrons on insulation carrier all detect, under the driving of guide rail driver module, insulation carrier is shifted out camera bellows, to carry out the Photoelectric Detection of the LED charactron of next round.
Elaborate the acquisition of the optical performance information of LED charactron below.
Brightness disproportionation, refers to that the average brightness deviation of the device all pens section therewith of some section on same device is greater than certain numerical value.Namely these sections are crossed bright or excessively dark.When sensed luminance is uneven, in order to have certain matching degree with human eye vision, between pen section, the comparison of brightness needs to follow certain strategy.This strategy comprises:
Between the pen section of A) different colours, without the need to comparing; Inequality only between more same color;
Between the pen section of B) different area, without the need to comparing; Inequality only between more similar area pen section
C) use organoleptic effects insignificant to user, without the need to comparing.Such as: specific pattern on Special digital pipe.
When judging the brightness of LED charactron, need to detect uneven gear parameter according to setting the requirement of LED charactron quality.The transformational relation of gear and luminance difference is as shown in table 1, and available following formula represents: luminance difference degree=gear * 5%.When the brightness ratio mean flow rate of certain section is little or large, and after luminance difference is greater than set gear, be just judged as brightness disproportionation.
The relation of table 1, luminance difference and gear
| Gear value | Diversity factor |
| 1 | 5％ |
| 2 | 10％ |
| 3 | 15％ |
| 4 | 20％ |
| 5 | 25％ |
| …… | Every grade of step-length 5% |
| 10 | 50％ |
Colourity is uneven, refer to that the colourity on same device between different pen section has deviation, and deviation is greater than certain numerical value.The same with brightness contrast strategy, user can by the grouping situation of the standard picture pen section of amendment non-defective unit, the chromatic value of contrast same color, similar area pen section.
When judging LED charactron colourity, also need to detect uneven gear parameter according to setting the requirement of LED charactron quality.As a rule, colourity comprises the mode of three kinds of calibrations: 1) angle; 2) wavelength; 3) chromaticity coordinates.Step-length and the scope of often kind of mode are as shown in table 2.
The relation of step-wise fashion and step-length and scope during table 2, colourity judge
| Step-wise fashion | Gear number | Step-length |
| Angle | 1-180 | 1 degree |
| Wavelength | 1-40 | 1nm |
| Chromaticity coordinates | 0.01-1 | 0.01 |
Wherein, step-length refers to that gear sets the minimum resolving accuracy that can reach, and gear refers to and carries out the judgement of non-defective unit defective products.By selecting a kind of step-wise fashion wherein, and relevant gear value is set.After difference between the colourity and average chrominance of certain section is greater than set gear, be just judged as colourity inequality.
Light leak refers on same device, and while some section is lit, other Duan Wei are lit.In this case there is the situation of brightness beyond certain numerical value of the pen section be not lit.This light leak is from the contiguous printing opacity lighting pen section.
Which first need to select a section to be lit.When the correlative value of certain section is greater than numerical value corresponding to set gear, namely think that this section exists light leak.
Judge LED charactron whether light leak time, need the gear parameter according to setting light leak to the requirement of LED charactron quality.Contrast is not lit the brightness of pen section and other are lit the brightness of pen section, when the correlative value of certain section is greater than numerical value corresponding to set gear, namely thinks that this section exists light leak.
Impurity refers to that some section region memory of LED charactron is at foreign material.Need the gear parameter according to setting defects inspecting to the requirement of LED charactron quality.
There is the region be damaged in the housing that cut refers to LED charactron.When judging the cut of LED charactron, need the gear parameter according to setting scratch detection to the requirement of LED charactron quality.
In sum, the speed that detects the photoelectric properties of LED charactron of the photodetector system of LED charactron of the present utility model is fast, accuracy is high; Accelerate the loading and unloading speed of LED charactron, convenient operation; The electrical connection properties of LED charactron is more stable, and it is more accurate to detect.So the utility model effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not for limiting the utility model.Any person skilled in the art scholar all without prejudice under spirit of the present utility model and category, can modify above-described embodiment or changes.Therefore, such as have in art and usually know that the knowledgeable modifies or changes not departing from all equivalences completed under the spirit and technological thought that the utility model discloses, must be contained by claim of the present utility model.
Claims (8)
1. a photodetector system for LED charactron, is characterized in that: comprise camera bellows, rail plate, guide rail driver module, insulation carrier, image collection module, LED drive module, main control module, image processing module and electric performance test module; Described image collection module, described guide rail driver module, described LED drive module, described main control module, described image processing module and described electric performance test module are all arranged in described camera bellows;
Described camera bellows is used for providing working environment for the Photoelectric Detection of LED charactron;
Described insulation carrier is used for carrying several LED charactrons to be measured abreast;
Described rail plate is arranged on below described insulation carrier, passes in and out described camera bellows for driving several LED charactrons to be measured on described insulation carrier;
Described guide rail driver module passes in and out camera bellows for driving rail plate; And under the control of described main control module, according to the position deviation of current LED charactron to be measured and testing interdigit, current LED charactron to be measured is moved to testing position;
Described LED drive module is connected with described main control module, under the control of described main control module, drives and lights the LED charactron current to be measured be positioned on testing position;
Described image collection module is connected with described main control module, for obtaining the image information of current tested LED charactron;
Described image processing module is connected with described main control module with described image collection module, for before current tested LED charactron powers on, the image information of the current tested LED charactron that image collection module obtains is processed, obtains the positional information of current tested LED charactron; After current tested LED charactron powers on, the image information of the LED charactron that image collection module obtains is processed, obtain the optical performance information of tested LED charactron;
Described electric performance test module is connected with described main control module with described LED drive module, for obtaining the electric property information of tested LED charactron;
The positional information of current tested LED charactron before described main control module is used for powering on according to current tested LED charactron, obtains the position deviation of this positional information and testing interdigit, and is sent to described guide rail driver module; And according to the test result of described image processing module and described electric performance test module, judge whether tested LED charactron is non-defective unit.
2. the photodetector system of LED charactron according to claim 1, is characterized in that: described guide rail driver module comprises driving belt and drive motor.
3. the photodetector system of LED charactron according to claim 1, it is characterized in that: described LED drive module comprises probe and probe actuation module, described probe is used under the driving of described probe actuation module, realizes and the contact of the pin of the LED charactron current to be measured on testing position and disconnection.
4. the photodetector system of LED charactron according to claim 1, is characterized in that: described image collection module is positioned at the top of testing position, comprises camera and light source.
5. the photodetector system of LED charactron according to claim 4, is characterized in that: described camera adopts CCD camera or CMOS camera.
6. the photodetector system of LED charactron according to claim 1, is characterized in that: described electric performance test module and described main control module are co-located on one piece of pcb board.
7. the photodetector system of LED charactron according to claim 1, is characterized in that: also comprise display module, and described display module is connected with described main control module, for showing whether several tested LED charactrons current are non-defective unit.
8. the photodetector system of LED charactron according to claim 7, is characterized in that: described display module adopts liquid crystal display, LED charactron or pilot lamp.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974335A (en) * | 2016-06-06 | 2016-09-28 | 格力电器（武汉）有限公司 | Nixie tube detection device |
| CN107390144A (en) * | 2017-08-15 | 2017-11-24 | 台龙电子（昆山）有限公司 | Detect the device of LED light bar photoelectric properties |
| CN108426891A (en) * | 2018-05-07 | 2018-08-21 | 湖北第二师范学院 | A kind of pin of optical device welding quality detection method and device |
| CN108459256A (en) * | 2017-02-20 | 2018-08-28 | 常州星宇车灯股份有限公司 | A kind of vision detection system and detection method of LED car lamp lens module |
| CN114509701A (en) * | 2022-01-18 | 2022-05-17 | 联宝(合肥)电子科技有限公司 | Indicator light detection device |
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- 2015-11-26 CN CN201520965433.0U patent/CN205175664U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974335A (en) * | 2016-06-06 | 2016-09-28 | 格力电器（武汉）有限公司 | Nixie tube detection device |
| CN108459256A (en) * | 2017-02-20 | 2018-08-28 | 常州星宇车灯股份有限公司 | A kind of vision detection system and detection method of LED car lamp lens module |
| CN107390144A (en) * | 2017-08-15 | 2017-11-24 | 台龙电子（昆山）有限公司 | Detect the device of LED light bar photoelectric properties |
| CN108426891A (en) * | 2018-05-07 | 2018-08-21 | 湖北第二师范学院 | A kind of pin of optical device welding quality detection method and device |
| CN114509701A (en) * | 2022-01-18 | 2022-05-17 | 联宝(合肥)电子科技有限公司 | Indicator light detection device |
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